After successfully authenticating to a remote server, a server administrator is presented with an interactive command line with no graphical interface. Which of the following protocols did the administrator MOST likely use to securely connect to the remote server?
A. SSH
B. Bash
C. Telnet
D. FTP
Answer: A. SSH
You might also like to view...
S1 returns the total number of credits for which Joe is registered, together with his Id. T maintains the integrity constraint “no student shall register for more than 20 credits.” If Joe has less than 20 credits, T executes S2 to increment the number of credits for which Joe has registered in a particular course. Suppose Joe executes two instances of T concurrently at the following isolation levels. In each case say whether or not the named violation of the constraint can occur and, if the answer is yes, explain how(e.g., what locks are or are not held).
A database has two tables:
Student(Id, Name, ...)—Id and Name are both unique Registered(Id, CrsCode, Credit, ...)—contains one rowfor each course each student is taking this semesterA transaction type, T, has two SQL statements, S1 followed by S2 (w ith local computations between them):
S 1 SELECT SUM(R.Credits), S.Id INTO :sum, :id FROM Student S, Registered R WHERE S.Name = ’Joe’ AND S.Id = R.Id GROUP BY S.Name, S.Id
S 2 UPDATE Registered SET Credits = Credits + 1 WHERE Id = :id AND CrsCode = :crsa. READ COMMITTED lost update b. REPEATABLE READ lost update c. SNAPSHOT lost update
The suffix of a domain name identifies the:
A) top-level domain name. B) transfer protocol. C) website address. D) network ID.
An Active Directory partition is a special file that Active Directory uses to store domain information.
Answer the following statement true (T) or false (F)
If cell A1 contained 10, cell A2 contained 2 and cell A3 contained =A1^A2, what would cell A3 show on the worksheet?
A. =A1^A2 B. 20 C. 10^2 D. 100